Gaseous Exchange Multiple Choice Questions and Answers Chapter-13
A complex process of oxidation reduction in which food is oxidized to release energy is?
A) Reproduction
B)Digestion
C)Respiration
E)Excretion
Atmospheric air contains:
A) 10% oxygen
C) 17% oxygen
B)15% oxygen
D)21% oxygen
E)2% oxygen
In higher plants, gas exchange through entire surface of leaves and stem is prevented due to external, waxy covering called.
A) Chlorophyll
B) Cuticle
C)Chitin
D) Cellulose
“Stomata” is formed by two modified epidermal bean-shaped:
A)Stomach Cells
B)Paneth Cells
C) Guard Cells
D)M-cells
E) Cork cells
In woody stems, respiratory gases can move freely In and out of stem through:
A) Stomach cells
B) Guard cells
C) Paneth cells
D) Lenticels
E) Rhizoids
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Plants in which photorespiration occurs are termed biochemically as
A) Ci plants ^
B) C2 plants
C) C3 plants
D) Cq plants
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Enzyme present in the process of photorespiration is:
A)Rubisco
B)Rabiscus
C)Ribulose
D) Rhinase
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Regarding “Hydra”, which statement is incorrect?
A)It is a multicellular
B) It has no organs.
C)Body has three layers of
D)Ectodermal cells exchange gases with external
E)Endodermal cells come within gastro-vascular
Earthworm respires through:
A)Mouth
C)Lungs
E) Allare incorrect
D) Moist Skin
Respiratory organ of cockroach is:
A)Moist Skin
B)Tracheae
C)Parabronchi
D)Lungs
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In cockroach, tracheae open outside the body through minute, slit like pores known as:
A)Gill-slits
B)Pseudophores
C)Spiracles
D)Ostium
Pairs of spiracles —— on lateral sides of cockroach:
A)5
B)8
C)10
D)12
Respiratory organs in fish are called:
A)Mouth
B)Gills
C)Trachea
Gas exchange is facilitated in gills due to:
A) Lamellar Flow
B) Swarming Flow
C) Vibratory Flow
D) Counter Current Flow
Thy lungs of a bird are internally subdivided into numerous, small, highly vascularized, thin membranous channels called:
A)Bronchioles
B)Pre-bronchi
C)Post-bronchi
D) Lobules
E)Parabronchi